Dr. John Tzilivakis's extended publications list

• Warner, D.J., Davies, M., Hipps, N., Tzilivakis, J., Lewis, K.A. and Fountain, M. (2026) Integrated weed management reduces the environmental impact of urban amenity weed control. Weed Science. In press.
• Nichols, R.N., Begg, G.S., Cantú-Salazar, L., Holland, J.M., Martin, Y., Tzilivakis, J., Vray, S., Warner, D.J., Zuta, A., McHugh, N.M. (2026). A standardised protocol for measuring farmland biodiversity outcomes across European Farmer Cluster landscapes. PLoS One, 21(3): e0345691. [DOI].
• Tzilivakis, J., Lewis, K.A., Kennedy, M.C., Ridley, L. & Garthwaite, D.G. (2026). The UK pesticide load indicator: development toward a policy tool. Journal of Environmental Science and Health, Part B: 1-18. [DOI].
• Warner, D. & Tzilivakis, J. (2024). Novel DST for Agrobiodiversity Management: Deliverable D5.3 report for the Framework project: Farmers clusters for realising agrobiodiversity management across ecosystems (SFS-01-2018-2019-2020). DOI.
• Grebot, B., Menadue, H., Nicol, L., Sloan, B., Doherty, O., Tzilivakis, J., Green, A., Vidaurre, R. & Manžuch, Z. (2024). Support to the evaluation of the Nitrates Directive (91/676/EEC): Final Report. European Commission, Brussels.
• Tzilivakis, J., Warner, D., Grebot, B. & Limmer, C. (2024). Technical assistance for preliminary work on Livestock Operating Rules for the Industrial Emissions Directive: Best Available Techniques: Task 1 Report. European Commission, Brussels.
• Tzilivakis, J., Warner, D., Grebot, B. & Limmer, C. (2024). Technical assistance for preliminary work on Livestock Operating Rules for the Industrial Emissions Directive: Best Available Techniques: Task 4 Report. European Commission, Brussels.
• Lewis, K.A. & Tzilivakis, J. (2025). Pesticide environmental indicators and the need to minimise uncertainty. environmental SCIENTIST, 35.2: 68-75. [Download].
• Tzilivakis, J., Taylor, J.L., Green, A., Warner, D.J & Lewis, K.A. (2024). A methodological review of UK food ecolabels. Final report. Prepared for the Consortium for Labelling for the Environment, Animal welfare, and Regenerative farming (CLEAR) by the Agriculture and Environment Research Unit (AERU), University of Hertfordshire, United Kingdom. [Download].
• Kennedy, M., Garthwaite, D., Ridley, L. & Tzilivakis, J. (2024). UK Pesticide Load Indicator. Phase 5 Update Report. Prepared for the Department for Environment, Food and Rural Affairs (Defra) for Project PC0122, by FERA Science Ltd and the Agriculture and Environment Research Unit (AERU), University of Hertfordshire, UK. [Download].
• Grebot, B., Menadue, H., Nicol, L., Sloan, B., Doherty, O., Tzilivakis, J., Green, A., Vidaurre, R. & Manžuch, Z. (2023). Support to the evaluation of the Nitrates Directive (91/676/EEC): Second Progress Report. European Commission, Brussels.
• Grebot, B., Menadue, H., Nicol, L., Sloan, B., Doherty, O., Tzilivakis, J., Green, A., Vidaurre, R. & Manžuch, Z. (2023). Support to the evaluation of the Nitrates Directive (91/676/EEC): First Progress Report. European Commission, Brussels.
• Rainford, J, Tzilivakis, J., Garthwaite, D., Jones, G. & Lewis, K.A. (2023). Finalising a Pesticide Load Indicator for the UK: Phase 4 Report. Prepared for the Department for Environment, Food and Rural Affairs (Defra), UK, for project PC0116, by FERA Science Ltd and the Agriculture and Environment Research Unit (AERU), University of Hertfordshire, UK. [Download].
• Warner, D. & Tzilivakis, J. (2022). Database of metrics and indicators of farmland biodiversity and ecosystem services: Deliverable D5.2 report for the Framework project: Farmers clusters for realising agrobiodiversity management across ecosystems (SFS-01-2018-2019-2020). European Commission, Brussels. DOI.
• Mondière, A., Tzilivakis, J., Warner, D.J., van der Werf, H.M.G., Farruggia, A., Glinec, O. & Corson, M.S (2022). An improved indicator framework to assess and optimise ecosystem services provided by permanent grasslands. Ecological Indicators, 146, 109765. DOI.
• Tzilivakis, J., Warner, D., Green, A., & Lewis, K.A. (2021). A broad-scale spatial analysis of the environmental benefits of fertiliser closed periods implemented under the Nitrates Directive in Europe. Journal of Environmental Management, 299: 113674. DOI.
• Lewis, K., Rainford, J., Tzilivakis, J., & Garthwaite, D. (2021). Application of the Danish Pesticide Load Indicator to UK arable agriculture. J Environ Qual.: 1-13. DOI.
• Lewis, K.A. & Tzilivakis, J. (2021). Implementation of the evidence‐based risk assessment for the re‐evaluation of Bisphenol A: preparatory work on cross‐sectional studies. European Food Safety Authority (EFSA), Parma. DOI.
• Lewis, K.A., Tzilivakis, J., Green, A. & Warner, D. (2021). Procurement of nitrate accounting tools for the Poole Harbour Nutrient Management Scheme. Final report.
• Warner, D., Tzilivakis, J., Almenar, J.B., Cantú-Salazar, L., Keillor, B. & Simmons, A. (2021). Definition of requirement of the FEAST decision support tool: Deliverable 5.1 report for the Framework project: Farmers clusters for realising agrobiodiversity management across ecosystems (SFS-01-2018-2019-2020).
• Lewis, K.A. & Tzilivakis, J. (2021). Review and synthesis of data on the potential environmental impact of artificial sweeteners. European Food Safety Authority (EFSA), Parma. DOI.
• Tzilivakis, J. & Warner, D. (2021). WP5: Biodiversity management and monitoring: DST development. 1st Annual General Assembly of the H2020 Framework project.
• Catulli, D.M., Sopjani, L., Reed, N., Tzilivakis, J. & Green, A. (2021). A Socio-technical experiment with a resource efficient Product Service System. Resources, Conservation and Recycling. 166: 105364. DOI.
• Rainford, J., Tzilivakis, J., Garthwaite, D., Jones, G. & Lewis, K. (2021). Developing a UK Pesticide Load Indicator: Phase 2 Final Report. Department for Environment, Food and Rural Affairs (Defra), London.
• Tzilivakis, J., Green, A., Warner, D.J. & Lewis, K.A. (2020). Identification of approaches and measures in action programmes under Directive 91/676/EEC. Final report. Report prepared for Directorate-General Environment, European Commission, for project ENV.D.1/SER/2018/0017 by the Agriculture and Environment Research Unit (AERU), University of Hertfordshire, United Kingdom. [Download].
• Tzilivakis, J., Green, A., Warner, D.J. & Lewis, K.A. (2020). Identification of approaches and measures in action programmes under Directive 91/676/EEC. Final report: Annex A: Comparison of implementation and environmental characterisation of NAP measures. Report prepared for Directorate-General Environment, European Commission, for project ENV.D.1/SER/2018/0017 by the Agriculture and Environment Research Unit (AERU), University of Hertfordshire, United Kingdom. [Download].
• Tzilivakis, J., Green, A., Warner, D.J. & Lewis, K.A. (2020). Identification of approaches and measures in action programmes under Directive 91/676/EEC. Final report: Annex B: Nitrate Action Programme characterisation scoring and aggregation methods. Report prepared for Directorate-General Environment, European Commission, for project ENV.D.1/SER/2018/0017 by the Agriculture and Environment Research Unit (AERU), University of Hertfordshire, United Kingdom. [Download].
• Tzilivakis, J., Green, A., Warner, D.J. & Lewis, K.A. (2020). Identification of approaches and measures in action programmes under Directive 91/676/EEC. Final report: Annexes C1-28: Austria to United Kingdom. Report prepared for Directorate-General Environment, European Commission, for project ENV.D.1/SER/2018/0017 by the Agriculture and Environment Research Unit (AERU), University of Hertfordshire, United Kingdom. [Download].
• Tzilivakis, J., Green, A., Warner, D.J. & Lewis, K.A. (2020). Identification of approaches and measures in action programmes under Directive 91/676/EEC. Final report: Annex D: Risk characterisation of all Nitrate Action Programmes. Report prepared for Directorate-General Environment, European Commission, for project ENV.D.1/SER/2018/0017 by the Agriculture and Environment Research Unit (AERU), University of Hertfordshire, United Kingdom.
• Catulli, M., Reed, N., Tzilivakis, J. & Green, A. (2020). Extending the life of infant mobility products: Implementing a Product Service System. Report for Defra project ABR112 (Project EV0534)/ Re-engineering Business for Sustainability.
• Tzilivakis, J., Green, A. & Catulli, M. (2020). Life Cycle Assessment: Conventional versus Product Service System approach to the provision of a child car seat (infant carrier): Re-Engineering Business for Sustainability (REBUS). Report for Defra project ABR112 (Project EV0534).
• Catulli, M., Sopjani, L., Reed, N., Tzilivakis, J. & Green, A. (2020). A socio-technical experiment with a resource efficient product service system. Resources, Conservation and Recycling, 199:105364. DOI.
• Lewis, K.A. & Tzilivakis, J. (2019). Wild bee toxicity data for pesticide risk assessments. Data, 4(3): 98. DOI
• Tzilivakis, J., Warner, D.J. & Holland, J.M. (2019). Developing practical techniques for quantitative assessment of ecosystem services on farmland. Ecological Indicators, 106: 105514. DOI
• Warner, D.J., Lewis, K. & Tzilivakis, J. (2019). Stormwater harvesting and flood mitigation: A UK perspective. In: Jegatheesan, V., Goonetilleke, A., van Leeuwen, J., Kandasamy, J., Warner, D., Myers, B. Bhuiyan, M., Spence, K. & Parker, G. eds. Urban Stormwater and Flood Management: Enhancing the Liveability of Cities. Cham, Switzerland: Springer Nature, pp. 29-47. DOI
• Lewis, K., Warner, D.J. & Tzilivakis, J. (2019). Stormwater harvesting. In: Jegatheesan, V., Goonetilleke, A., van Leeuwen, J., Kandasamy, J., Warner, D., Myers, B. Bhuiyan, M., Spence, K. & Parker, G. eds. Urban Stormwater and Flood Management: Enhancing the Liveability of Cities. Cham, Switzerland: Springer Nature, pp. 119-137. DOI
• Warner, D.J., Tzilivakis, J., Green, A., Charlton, D. & Lewis, K.A. (2019). Determining the climate change mitigation potential of Countryside Stewardship. World Journal of Agriculture and Soil Science Change, 1(2), DOI
• Tzilivakis, J., Warner, D., Green, A. & Lewis, K. (2019). Spatial analysis of the benefits and burdens of Ecological Focus Areas for water-related ecosystem services vulnerable to climate change in Europe. Mitig. Adapt. Strateg. Glob. Change, 24(2): 205-233. DOI
• Lewis, K.A., Tzilivakis, J., Warner, D.J. & Green, A. (2018). Agri-environmental Management in Europe: Sustainable Challenges and Solutions - From Policy Interventions to Practical Farm Management.. 5m Publishing, Sheffield, UK. ISBN: 1912178443
• Lewis, K.A. & Tzilivakis, J. (2017). Review of the published exposure data to pesticides for residents and bystanders, and for environmental risk assessment: Final report. EFSA supporting publication 2017:EN-1204, 101 pp. DOI
• Green, A., Lewis, K.A., Tzilivakis, J. & Warner D.J. (2017). Agricultural climate change mitigation: carbon calculators as a guide for decision making. International Journal of Agricultural Sustainability, 15(6): 645-661. DOI
• Lewis, K. & Tzilivakis, J. (2017). Development of a data set of pesticide dissipation rates in/on various plant matrices for the Pesticide Properties DataBase (PPDB). Data, 2(3), 28. DOI
• Green, A., Tzilivakis, J., Warner, D. & Lewis, K. (In press). Problems of Benchmarking Greenhouse Gas Emissions in Dairy Agriculture. Benchmarking: An International Journal, 24(6). DOI
• Tzilivakis, J., Warner, D.J., Green, A. & Lewis, K.A. (2017). Spatial and temporal variability of greenhouse gas emissions from rural development land use operations. Mitigation and Adaptation Strategies for Global Change, 22(3): 447-467. DOI.
• Warner, D., Tzilivakis, J., Green, A. & Lewis, K. (2017). Ecological Focus Areas and beneficial insect (Coleoptera: Carabidae) conservation for pest control: habitat suitability and farm specific factors. In: G. Begg, F. Bianchi, N. Birch, B. Gerowitt, J. Holland, D. Lupi, C. Moonen, M. Ramsden & P. van Rijn (Eds.), Proceedings of the 7th IOBC-WPRS Working Group meeting on Landscape Management for Functional Biodiversity (IOBC-WPRS Bulletin vol. 122). Dundee (Scotland, UK), 29-31 March, 6-10.
• Warner, D., Tzilivakis, J., Green, A. & Lewis, K. (2017). Prioritising agri-environment options for greenhouse gas mitigation. International Journal of Climate Change Strategies and Management, 9(1): 104-122. DOI.
• Warner, D.J., Tzilivakis, J., Green, A. & Lewis, K.A. (2016). Rural Development Program measures on cultivated land in Europe to mitigate greenhouse gas emissions – regional “hotspots” and priority measures. Carbon Management, 7(3-4): 205-219. DOI.
• Lewis, K.A., Tzilivakis, J., Warner, D. & Green, A. (2016). An international database for pesticide risk assessments and management. Human and Ecological Risk Assessment: An International Journal, 22(4): 1050-1064. DOI.
• Tzilivakis, J., Warner, D.J., Green, A., Lewis, K.A. & Angileri, V. (2016). An indicator framework to help maximise potential benefits for ecosystem services and biodiversity from ecological focus areas. Ecological Indicators, 69: 859-872. DOI.
• Tzilivakis, J., Warner, D., Green, A. & Lewis, K.A. (2015). Adapting to climate change: Assessing the vulnerability of ecosystem services in Europe in the context of rural development. Mitigation and Adaptation Strategies for Global Change, 20(4): 547-572. DOI.
• Lewis, K.A., Tzilivakis, J., Green, A. & Warner, D.J. (2015). The potential of feed additives to improve the environmental impact of European livestock farming: A multi-issue analysis. International Journal of Agricultural Sustainability, 13(1): 55-68. DOI.
• Tzilivakis, J., Green, A., Lewis, K.A. & Warner, D.J (2014). Identifying integrated options for agricultural climate change mitigation. International Journal of Climate Change Strategies and Management, 6(2): 192-211. DOI.
• Warner, D.J. (2014). Towards Developing Guidance Notes for Integrated Approaches to Amenity Weed Control. Presented twice on 11 February 2014 University of Hertfordshire & 25 February 2014 Lancaster University.
• Green, A., Warner, D.J., Tzilivakis, J., & Lewis, K.A. (2014). A Comparison of Carbon Accounting Tools and an Evaluation of Their Potential for Greenhouse Gas Mitigation. In: M. Hassouna & N. Guingand (Eds.), Emission of Gas and Dust from Livestock. (pp. 237-240). RMT Élevage et Environnement, Le Rheu, France.
• Warner, D.J., Green, A., Tzilivakis, J., & Lewis, K.A. (2014). Agricultural Greenhouse Gas Emissions Reduced by Agri-Environment Schemes on Improved Grassland Grazed by Intensive Beef Cattle. In: M. Hassouna & N. Guingand (Eds.), Emission of Gas and Dust from Livestock. (pp. 237-240). RMT Élevage et Environnement, Le Rheu, France.
• Tzilivakis, J., Lewis, K.A., Green, A., Warner, D.J., Stedman, A. & Naseby, D. (2013). Review of substances/agents that have direct beneficial effect on the environment: Mode of action and assessment of efficacy. EFSA Supporting Publication 2013:EN-440. European Food Safety Authority, Parma, Italy. [Download].
• Tzilivakis, J., Lewis, K., Green, A., Warner, D., Fialkiewicz, W., Olearczyk, D., Bordet, C. & Langevin, B. (2013). Optimal Design of Climate Change Policies Through the EU's Rural Development Policy: Final Report to the European Commission. European Commission, Brussels.
• Lewis, K.A., Tzilivakis, J. & Green, A. (2013). Agricultural carbon calculators - choosing the right one. Presented at 'Producing More for Less', Birmingham, UK, 16-17 January 2013.
• Warner, D.J., Tzilivakis, J., Green, A., Slater, R.I.J. & Lewis, K.A. (2013). Measuring the Extent to Which Greenhouse Gas Emission Savings Achieved by Environmental Stewardship are Displaced On-farm - Natural England Report NECR121. Natural England, York, UK. [Download].
• Lewis, K.A., Green, A., Warner, D.J. & Tzilivakis, J. (2012). Carbon accounting tools: are they fit for purpose in the context of arable cropping. International Journal of Agricultural Sustainability, 11(2): 159-175. DOI.
• Tzilivakis, J., Green, A., Warner, D.J., McGeever,K. & Lewis, K.A. (2012). A framework for practical and effective eco-labelling of food products. Sustainability Accounting, Management and Policy Journal, 3(1): 50-73. DOI. [Outstanding Paper Award Winner at the Literati Network Awards for Excellence 2013]
• Tzilivakis, J. (2011). The climate change mitigation potential of an EU farm: towards a farm-based integrated assessment. European Commission meeting of agri-environment correspondents, Brussels, Belgium, 18 March 2011.
• Tzilivakis, J., Lewis, K.A., Green, A. & Warner, D.J. (2011). A Novel Technique for Identifying Environmental Outcomes from Agricultural Practices. Impact Assessment and Project Appraisal, 29(1): 2-10. DOI.
• Tzilivakis, J., Lewis, K.A., Green, A., Warner, D.J., MacMillan, T & McGeevor, K. (2011). Effective approaches to environmental labelling of food products. Final Report for Defra Project FO0419. January 2011.
• Tzilivakis, J., Lewis, K.A., Green, A. & Warner, D.J. (2010). The Climate Change Mitigation Potential of an EU Farm: Towards a Farm-Based Integrated Assessment: Final Report for EC Project ENV.B.1/ETU/2009/0052. European Commission, Brussels.
• Warner, D.J., Lewis, K.A., Tzilivakis, J. & Green, A. (2010). Integrated Management Options for Agricultural Climate Change Mitigation (IMPACCT). Proceedings of ‘The Dundee Conference Crop Protection in Northern Britain 2010’, University of Dundee, 23 – 24 February 2010.
• Warner, D.J., Davies, M., Hipps, N., Osborne, N., Tzilivakis, J. & Lewis, K.A. (2010). Greenhouse gas emissions and energy use in UK-grown short-day strawberry (Fragaria xananassa Duch) crops. Journal of Agricultural Science, 148(6): 667-681. DOI.
• Lewis, K.A., Green, A., Tzilivakis, J. & Warner, D.J. (2010). The contribution of UK farm assurance schemes to environmental policy: Research Update Brief. University of Hertfordshire, Hatfield, UK. [Download].
• Lewis, K.A., Green, A., Tzilivakis, J. & Warner, D.J. (2010). The contribution of UK farm assurance schemes towards desirable environmental policy outcomes. International Journal of Agricultural Sustainability, 8(4): 237–249. DOI.
• Dubus, I., Azimonti, G., Bach, M., Barriuso, E., Bidoglio, G., Bouraoui, F., Centofanti, T., Coquet, Y., Feisel, B., Fialkiewicz, W., Fowler, H., Galimberti, F., Grizzetti, B., Højberg, A., Hollis, J., Jarvis, N., Kajewski, I., Kjær, J., Krasnicki, S., Lewis, K., Lobnik, F., Lolos, P., Moeys, J., Nolan, T., Rasmussen, P., Réal, B., Reichenberger, S., Šinkovec, M., Stenemo, F., Suhadolic, M., Surdyk, N., Tzilivakis, J., Vaudour, T., Avoulidou-Theodorou, E., Windhorst, E. & Wurm, D. (2009). The FOOTPRINT Software Tools: Pesticide Risk Assessment and Management in the EU at different spatial scales. Presented at CEMEPE & SECOTOX June 2009, Mykonos, Greece.
• Tzilivakis, J., Green, A. & Lewis, K.A. (2009). The FOOT-FS software system: An overview. Presented at the FOOTPRINT Final Conference, Giessen, Germany, 18-19 March 2009.
• Green, A., Lewis, K.A. & Tzilivakis, J. (2009). Pesticide Properties Database: An overview. Presented at the FOOTPRINT Final Conference, Giessen, Germany, 18-19 March 2009.
• Lewis, K.A., Green, A. & Tzilivakis, J. (2009). Pesticide Properties Database: Usage and Uptake. Presented at the FOOTPRINT Final Conference, Giessen, Germany, 18-19 March 2009.
• Lewis, K.A., Green, A. & Tzilivakis, J. (2009). The Pesticide Properties DataBase: Beyond FOOTPRINT. Presented at the FOOTPRINT Final Conference, Giessen, Germany, 18-19 March 2009.
• Lewis K.A., Tzilivakis J, Green, A., Warner, D.J. & Coles A.J. (2008) Farm Assurance Schemes – Can they improve farming standards? British Food Journal, 110(11): 1088-1105.
• Körner, O., Warner, D., Tzilivakis, J., Eveleens, B. & Heuvelink, E. (2008). Decision Support for Optimising Energy Consumption in European Greenhouses. Acta Hort. (ISHS), 801: 803-810.
• Tzilivakis, J. & Lewis, K.A. (2007). The Agricultural Document Library (ADLib) and its applications. Proceedings of the European Federation for IT in Agriculture (EFITA) conference 2-5 July 2007, Glasgow.
• Lewis, K., Green A. & Tzilivakis J. (2007). A Pesticide database holding fate and ecological values. Report DL24 of the FP6 EU-funded FOOTPRINT project, 28p.
• Tzilivakis, J. & Lewis, K.A. (2007). The Beta version of FOOT-FS. Report DL26 of the FP6 EU-funded FOOTPRINT project, 28p.
• Lewis, K., Green, A. & Tzilivakis, J. (2007). Development of an improved pesticide properties database for risk assessment applications. EFITA/WCCA Conference Glasgow, July 2007.
• Green, A., Lewis, K.A., Tzilivakis, J. Dubus, I.G. & Coles, A. (2007). FOOTPRINT - Creating tools for Pesticide Risk Assessment and Management in Europe. Poster presented at Voluntary Initiative Meeting, SCI York.
• van der Werf, H.M.G., Tzilivakis, J., Lewis, K.A. & Basset-Mens, C. (2007). Environmental impacts of farm scenarios according to five assessment methods. Agriculture, Ecosystems and Environment, 118: 327-338.
• Tzilivakis, J., Jaggard, K., Lewis, K.A., May, M. & Warner, D.J. (2005). An assessment of the energy inputs and greenhouse gas emissions in sugar beet (Beta vulgaris) production in the UK. Agricultural Systems, 85: 101-119.
• Tzilivakis, J., Jaggard, K., Lewis, K.A., May, M. & Warner, D.J. (2005). Environmental impact and economic assessment for UK sugar beet production systems. Agriculture, Ecosystems and Environment, 107: 341-358.
• Tzilivakis, J., Lewis K.A. & Williamson, A.R. (2005). A prototype framework for assessing risks to soil functions. EIA Review, 25: 181-195.
• Lewis, K.A., Tzilivakis, J. & Green, A. (2004). Challenges and opportunities for land managers to achieve a more integrated approach to land and water management. BCPC Conference. Glasgow November 2004.
• Jaggard, K., Tzilivakis, J., Warner, D.J. & Lewis, K.A. (2004) Beet and the environment. British Sugar Beet Review, 72(2): 34-37.
• Lewis, K.A. & Tzilivakis, J. (2004). New initiatives for maintaining on-farm environmental protection. In Aspects of Applied Biology 72, Advances in Applied Biology: providing new opportunities for consumers and producers in the 21st century. pp 209-216 AAB centenary 2004. Oxford.
• Tzilivakis, J. & Lewis, K.A. (2004). The development and use of farm level indicators in England. Sustainable Development, 12: 107-120.
• Tzilivakis, J., Turley, D.B., Ogilvy, S.E., Lewis, K.A. & Lawson, K. (2004). Assessing the environmental impact of crop protection strategies for integrated farming systems. Agronomie, 24: 67-76.
• Hart, A., Brown, C.D., Lewis, K.A. & Tzilivakis, J. (2003). p-EMA (II): evaluating ecological risks of pesticides for a farm-level risk assessment system. Agronomie, 23: 75-84.
• Lewis, K.A., Brown, C.D., Hart, A. & Tzilivakis, J. (2003). p-EMA (III): overview and application of a software system designed to assess the environmental risk of agricultural pesticides. Agronomie, 23: 85-96.
• Warner, D.J., Tzilivakis, J., Hipps, N., Davies, M., Osborne, N. & Lewis, K.A. (2003). Environmental impact assessment of the UK strawberry crop. Proceedings of the International Fertiliser Society and Dahlia Greidinger Symposium. Izmir, Turkey, 7 – 10 December 2003, pages 396 - 398.
• Green, A., Lewis, K.A., Tzilivakis, J. & Warner, D.J. (2002). Indicators of agricultural sustainability - are they relevant to grassland management? Proceedings of the British Grassland Society Winter Conference - Profitable Grass and Forage: Meeting the needs of the farmer and sosciety. 27-28 November 2002, Stafford, UK. The British Grassland Society, Reading, UK.
• Padel, S., Tzilivakis, J., Measures, M., Stockdale, E., & Watson, C. (2002). Development of software to plan conversion to organic production (OrgPlan). Proceedings of COR Colloquium of Organic Researchers, Aberystwyth, 26-28 March 2002.
• Tzilivakis, J., Jaggard, K., Lewis, K.A., May, M. & Warner, D.J. (2002). Environmental assessment of sugar beet production. Proceedings of the 65th IIRB (International Institute for Beet Research) Congress, Brussels, February 13-14 2002.
• Lewis, K.A., Tzilivakis, J., Brown, C.D., & Hart, A. (2001). On-farm risk assessment of agricultural pesticides. Proceedings of the Third European Conference of the European Federation for Information Technology in Agriculture, Food and the Environment (vol. 1). June 18-20, 2001, Montpellier, France: 37-41.
• Tzilivakis, J. & Lewis, K.A. (2001). The development of software to support planning conversion to organic agriculture. Proceedings of the Third European Conference of the European Federation for Information Technology in Agriculture, Food and the Environment (vol. 1). June 18-20, 2001, Montpellier, France: 119-123.
• Lewis, K.A. & Tzilivakis, J. (2000). The role of the EMA software in integrated crop management and its commercial uptake. Pest Management Science, 56: 969-973.
• Lewis, K.A., Newbold, M.J. & Tzilivakis, J. (1999). Developing an emissions inventory from farm data. Journal of Environmental Management, 55: 183-197.
• Tzilivakis, J., Broom, C., Lewis, K.A., Tucker, P., Drummond, C. & Cook, R. (1999). A strategic environmental assessment method for agricultural policy in the UK. Land Use Policy, 16: 223-234.
• Tzilivakis, J. & Lewis, K.A. (1999). Environmental Management for Agriculture (EMA) and Sustainable Agriculture. In Schiefer, G. et al. (Eds.) Perspectives of Modern Information and Communication Systems in Agriculture, Food Production and Environmental Control (Volume A). Proceedings of the Second European Conference of the European Federation for Information Technology in Agriculture, Food and the Environment. September 27-30, 1999, Bonn, Germany: 175-185.
• Lewis, K.A. & Tzilivakis, J. (1998). Evaluating a technique used to measure environmental performance within agriculture - Case studies. Eco-management and Auditing, 5(3): 126-135.
• Tucker, P., Ferguson, C. & Tzilivakis, J. (1998). Integration of environmental assessment indicators into the site assessment procedures. In Lerner, D.N. and Walton, N.R.G. (Eds.), Contaminated land and groundwater: Future directions. Geological society 14, 127-133.
• Tzilivakis, J. (1998). Sustainable waste management. Warmer Bulletin, 58: 20-21.
• Lewis, K.A., Tzilivakis, J., Skinner, J.A. & Bardon, K.S. (1997). Environmental best practice advisory system for agriculture. EFITA Conference, Copenhagen, Denmark, June 1997.
• Lewis, K.A., Tzilivakis, J., Skinner, J.A., Finch, J., Kaho, T., Newbold, M.J. & Bardon, K.S. (1997). Scoring and ranking farmland conservation activities to evaluate environmental performance and encourage sustainable farming. Sustainable Development, 5(2): 71-78.
• Newbold, M.J., Lewis, K.A., Tzilivakis, J., Finch, J., Kaho, T., Skinner, J.A. & Bardon, K.S. (1997). The options for informal environmental management: The agricultural industry highlighted. Eco-Management and Auditing, 4(1): 22-27.
• Tzilivakis, J., Broom, C.E. & Lewis, K.A. (1997). In search of sustainable CAP: Assessing the environmental impacts of agricultural policy. European Environment Conference, September 1997, Leeds.

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